v-key vue code example
Example 1: foreach vuejs template
<ul id="example-1">
<li v-for="item in items" :key="item.message">
{{ item.message }}
</li>
</ul>
Example 2: vue for loop
<ul id="v-for-object" class="demo">
<li v-for="value in object">
{{ value }}
</li>
</ul>